/***** BEGIN LICENSE BLOCK *****
 * Version: CPL 1.0/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Common Public
 * License Version 1.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.eclipse.org/legal/cpl-v10.html
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * Copyright (C) 2002 Anders Bengtsson <ndrsbngtssn@yahoo.se>
 * Copyright (C) 2002-2004 Jan Arne Petersen <jpetersen@uni-bonn.de>
 * Copyright (C) 2004-2005 Thomas E Enebo <enebo@acm.org>
 * Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de>
 * 
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
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 * use your version of this file under the terms of the CPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the CPL, the GPL or the LGPL.
 ***** END LICENSE BLOCK *****/
package asruby.runtime.methods {

import asruby.lang.RubyModule;
import asruby.runtime.Arity;
import asruby.runtime.Block;
import asruby.runtime.ThreadContext;
import asruby.runtime.IRubyObject;

/**
 *
 * @author  jpetersen
 */
public class AliasMethod extends DynamicMethod {
    private  var oldMethod:DynamicMethod;
    private  var oldName:String;

    /*
     * This code used to try and optimize the case of when oldMethod is an aliasMethod.
     * This seems a little overkill.
     */

    public  function AliasMethod(implementationClass:RubyModule, oldMethod:DynamicMethod, oldName:String){
        super(implementationClass, oldMethod.getVisibility(), null);

        this.oldName = oldName;
        this.oldMethod = oldMethod;
    }
    
    public override function call(context:ThreadContext, self:IRubyObject, clazz:RubyModule, name:String, args:Array, block:Block):IRubyObject{
        return oldMethod.call(context, self, clazz, oldName, args, block);
    }
    
    public override function call2(context:ThreadContext, self:IRubyObject, clazz:RubyModule, name:String, block:Block):IRubyObject{
        return oldMethod.call2(context, self, clazz, oldName, block);
    }

    public override function dup():DynamicMethod{
        return new AliasMethod(implementationClass, oldMethod, oldName);
    }

    public override function getArity():Arity{
        return oldMethod.getArity();
    }
    
    public override function getRealMethod():DynamicMethod{
        return oldMethod.getRealMethod();
    }
}
}